Right valves versus left valves seems to have a lot of divers confused. Training agencies coined the term right "hand" valve, which was meant to imply a valve that can be reached with the right hand when a diver reaches behind their head with the tank on the back. A "left hand" valve was deemed the opposite. Because all Dive Rite valves are modular, we call all valves with a reverse thread on the crossbar plug a "left valve." This is easily identifiable by a notch on the plug. The valves with plugs that are not-notched are "right valves." Most people find it easier just to remember that when facing a Dive Rite valve, if the hand wheel is on the left it is a left valve and if the hand wheel is on the right it is a right valve. Our Right Valves are available in either 200 bar or 300 bar with shock absorbing ribbed rubber knobs that are rugged, yet easy to manipulate. The right valve paired with the left can be used for independent doubles, a doubles manifold, sidemount, and rebreather cylinders. All Dive Rite valves come standard with 3500 psi working pressure relief disks. Our valves are modular so divers can use them independently on single tanks, put them together to form an H-valve or use an isolation bar to build a manifold for double tanks. All Dive Rite valves come with Viton o-rings and oxygen compatible lubricants and are Nitrox ready up to 40-percent.